     (catch java.net.UnknownHostException e
       false)))
 
-(def run-network-tests? true)
+(defonce run-network-tests? (atom false))
 
 (defn try-fetch-url [url]
   (some-> url


(defn test-scrape-urls []
  (and
   run-network-tests?

   (test-url root-url)
   (test-url manga-url)

(defn test-full-site-traversal [site]
  (and
   (call-with-options site #(ensure-all-dependencies))
   @run-network-tests?

   (is (not
        (nil?
